How to prevent files from being overwritten

[771212]

I am looking for a way to allow my users to upload files into a directory and prevent them from overwriting the file if the file name already exists.

For instance, UserA wants to upload a file name Project1. There is already a file named Project1 in there. I need to kick the user back out and let them know that they have to rename the file and try to upload the file again.

I can't use the MakeUnique - NameConflict attribute because we need to make the file name something that would make sense to the user who wishes to download the file. A name such as "Project1" would be meaningful. Each user has a unique username. Is there possibly a way to append the username to the filename if the filename alreadys exists in the directory? i.e. Project1_mike2277

We tried to use this code but no luck on ColdFusion Server MX. It works alright on 5.0 though.

<CFFILE
DESTINATION=&quot;F:\mySite\file_transfer\134
ACTION=&quot;UPLOAD&quot;
NAMECONFLICT=&quot;skip&quot;
FILEFIELD=&quot;FileName&quot;>
</cfif>

<CFIF #File.FileExisted# IS &quot;YES&quot;>
Sorry, please go back and rename your file and try to upload it again.
<CFELSE>
Congratulations! Your file has been uploaded.
</CFIF>

Our error message though on MX is:

Element FILEEXISTED is undefined in FILE.

Any suggestions would be appreciated!

 

[Sarky78]

I tried the above code on our CFMX server and it worked fine. we are running win2k, iis5 and CF MX SP2, if that is of any help!

I see from the documentation that MM now recommends using CFFile instead of File so your line <CFIF #File.FileExisted# IS &quot;YES&quot;> would change to <CFIF #CFFile.FileExisted# IS &quot;YES&quot;>

not a biggie but it might help you!

about renaming the file, you could do something like this:

<CFFILE
DESTINATION=&quot;F:\mySite\file_transfer\134
ACTION=&quot;UPLOAD&quot;
NAMECONFLICT=&quot;MAKEUNIQUE&quot;
FILEFIELD=&quot;FileName&quot;>

<CFIF File.FileExisted IS &quot;YES&quot;>
<CFSET FileLoc = CFFILE.serverDirectory & &quot;\&quot; & CFFIle.serverFileName & #Your_username_variable# & &quot;.&quot; & CFFile.serverFileExt>
<CFFILE ACTION=&quot;RENAME&quot; SOURCE=&quot;#CFFILE.serverDirectory#\#CFFile.ServerFile#&quot; DESTINATION=&quot;#variables.FileLoc#&quot;>
Congratulations! Your file has been uploaded.
<CFELSE>
Congratulations! Your file has been uploaded.
</CFIF>

hope this helps!

Tony